US 9,808,783 B2
Regenerable sorbent for carbon dioxide removal
Jian-Ping Shen, Chapel Hill, NC (US); Luke James Ivor Coleman, Durham, NC (US); Marty Alan Lail, Raleigh, NC (US); Raghubir Prasad Gupta, Durham, NC (US); and Brian Scott Turk, Durham, NC (US)
Assigned to Research Triangle Institute, Research Triangle Park, NC (US)
Appl. No. 14/415,283
Filed by RESEARCH TRIANGLE INSTITUTE, Research Triangle Park, NC (US)
PCT Filed Jul. 19, 2013, PCT No. PCT/US2013/051257
§ 371(c)(1), (2) Date Jan. 16, 2015,
PCT Pub. No. WO2014/015243, PCT Pub. Date Jan. 23, 2014.
Claims priority of provisional application 61/673,626, filed on Jul. 19, 2012.
Prior Publication US 2015/0190777 A1, Jul. 9, 2015
Int. Cl. B01J 20/04 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); B01J 20/34 (2006.01); B01D 53/62 (2006.01); B01D 53/02 (2006.01); B01D 53/82 (2006.01); B01D 53/96 (2006.01); B01D 53/04 (2006.01); B01D 53/047 (2006.01); C10K 1/00 (2006.01); C10K 1/26 (2006.01)
CPC B01J 20/043 (2013.01) [B01D 53/02 (2013.01); B01D 53/62 (2013.01); B01D 53/82 (2013.01); B01D 53/96 (2013.01); B01J 20/04 (2013.01); B01J 20/041 (2013.01); B01J 20/28011 (2013.01); B01J 20/3078 (2013.01); B01J 20/3085 (2013.01); B01J 20/3433 (2013.01); B01J 20/3483 (2013.01); B01J 20/3491 (2013.01); B01D 53/0462 (2013.01); B01D 53/0476 (2013.01); B01D 2251/304 (2013.01); B01D 2251/402 (2013.01); B01D 2251/602 (2013.01); B01D 2251/606 (2013.01); B01D 2253/1124 (2013.01); B01D 2257/504 (2013.01); B01D 2258/01 (2013.01); B01D 2258/025 (2013.01); B01D 2258/0241 (2013.01); B01D 2258/0283 (2013.01); B01J 2220/42 (2013.01); C10K 1/005 (2013.01); C10K 1/26 (2013.01); Y02C 10/04 (2013.01); Y02C 10/08 (2013.01); Y02C 20/20 (2013.01); Y02P 20/152 (2015.11)] 15 Claims
OG exemplary drawing
 
1. A mixed salt composition adapted for use as a sorbent for carbon dioxide removal from a gaseous stream, the composition being in solid form and comprising:
i) magnesium oxide;
ii) an alkali metal carbonate; and
iii) an alkali metal nitrate, wherein the composition has a molar excess of magnesium characterized by a Mg:X atomic ratio of at least about 1.1:1, wherein X is the alkali metal.